Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 159
zer beiiig, that it cannot be made torotate; the touimaHne being undesirable, on accouut of thecolour which it imparts when sufficiently thick to produce aneffective polarization; and the crystals of Herapathite beingseldom obtained perfect, of sufficient size to afford a goodillumination. The…
Microscopy
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-636-378.webp)
